1. Department of Gastrointestinal Surgery, Department of Clinical Nutrition, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
2. National Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
3. Laboratory for Clinical Medicine, Capital Medical University, Beijing, 100038, China
4. Key Laboratory of Cancer FSMP for State Market Regulation, Beijing 100038, China
5. Department of Hepatological Surgery, Kailuan General Hospital, Tangshan, 063000, China
6. Department of Cardiology, Kailuan General Hospital, Tangshan, 063000, China